/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* FreeCol is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.common.networking;
import net.sf.freecol.common.model.Game;
import net.sf.freecol.common.model.IndianSettlement;
import net.sf.freecol.common.model.Map.Direction;
import net.sf.freecol.common.model.Player;
import net.sf.freecol.common.model.Tile;
import net.sf.freecol.common.model.Unit;
import net.sf.freecol.common.model.Unit.MoveType;
import net.sf.freecol.server.FreeColServer;
import net.sf.freecol.server.model.ServerPlayer;
import org.w3c.dom.Element;
/**
* The message sent when a missionary establishes/denounces a mission.
*/
public class MissionaryMessage extends DOMMessage {
/**
* The id of the missionary.
*/
private String unitId;
/**
* The direction to the settlement.
*/
private String directionString;
/**
* Is this a denunciation?
*/
private boolean denounce;
/**
* Create a new <code>MissionaryMessage</code> with the
* supplied name.
*
* @param unit The missionary <code>Unit</code>.
* @param direction The <code>Direction</code> to the settlement.
* @param denounce True if this is a denunciation.
*/
public MissionaryMessage(Unit unit, Direction direction, boolean denounce) {
this.unitId = unit.getId();
this.directionString = String.valueOf(direction);
this.denounce = denounce;
}
/**
* Create a new <code>MissionaryMessage</code> from a
* supplied element.
*
* @param game The <code>Game</code> this message belongs to.
* @param element The <code>Element</code> to use to create the message.
*/
public MissionaryMessage(Game game, Element element) {
this.unitId = element.getAttribute("unitId");
this.directionString = element.getAttribute("direction");
this.denounce = Boolean.valueOf(element.getAttribute("denounce")).booleanValue();
}
/**
* Handle a "missionary"-message.
*
* @param server The <code>FreeColServer</code> handling the message.
* @param player The <code>Player</code> the message applies to.
* @param connection The <code>Connection</code> message was received on.
*
* @return An element containing the result of the mission operation,
* or an error <code>Element</code> on failure.
*/
public Element handle(FreeColServer server, Player player,
Connection connection) {
ServerPlayer serverPlayer = server.getPlayer(connection);
Unit unit;
try {
unit = server.getUnitSafely(unitId, serverPlayer);
} catch (Exception e) {
return DOMMessage.clientError(e.getMessage());
}
if (unit.getTile() == null) {
return DOMMessage.clientError("Unit is not on the map: " + unitId);
}
Direction direction = Enum.valueOf(Direction.class, directionString);
Tile tile = unit.getTile().getNeighbourOrNull(direction);
if (tile == null) {
return DOMMessage.clientError("Could not find tile"
+ " in direction: " + direction + " from unit: " + unitId);
}
IndianSettlement is = tile.getIndianSettlement();
if (is == null) {
return DOMMessage.clientError("There is no native settlement at: "
+ tile.getId());
}
Unit missionary = is.getMissionary();
if (denounce) {
if (missionary == null) {
return DOMMessage.clientError("Denouncing an empty mission at: "
+ is.getId());
} else if (missionary.getOwner() == player) {
return DOMMessage.clientError("Denouncing our own missionary at: "
+ is.getId());
}
} else {
if (missionary != null) {
return DOMMessage.clientError("Establishing extra mission at: "
+ is.getId());
}
}
MoveType type = unit.getMoveType(is.getTile());
if (type != MoveType.ENTER_INDIAN_SETTLEMENT_WITH_MISSIONARY) {
return DOMMessage.clientError("Unable to enter " + is.getName()
+ ": " + type.whyIllegal());
}
// Valid, proceed to denounce/establish.
return (denounce)
? server.getInGameController()
.denounceMission(serverPlayer, unit, is)
: server.getInGameController()
.establishMission(serverPlayer, unit, is);
}
/**
* Convert this MissionaryMessage to XML.
*
* @return The XML representation of this message.
*/
public Element toXMLElement() {
Element result = createNewRootElement(getXMLElementTagName());
result.setAttribute("unitId", unitId);
result.setAttribute("direction", directionString);
result.setAttribute("denounce", Boolean.toString(denounce));
return result;
}
/**
* The tag name of the root element representing this object.
*
* @return "missionary".
*/
public static String getXMLElementTagName() {
return "missionary";
}
}